hdmi (high defintion multamedia input) it basically the red, white, yellow rca plugs all in one and can handle high def audio and video output. your tv needs a hdmi input on it for it to even matter.
but its the new standard for high def technology it pretty much sends uncompressed audio and video thru the wire that results in high def video and sound.
everything is already being made with hdmi xbox 360, ps3s, blue ray, hd-dvd players, etc.